Standard Science Primary 3 Cycles

Why does a caterpillar moult several times during the larva stage?

A To protect itself from predators.
B To change its colour.
C To prepare for laying eggs.
D To allow its body to grow bigger.
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Worked Solution

Step 1: Insects have a hard outer skin (exoskeleton) that does not stretch. Step 2: As the caterpillar eats and grows, it becomes too tight. Step 3: It sheds the old skin (moults) to reveal a larger one underneath.

Correct answer: To allow its body to grow bigger.

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